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View Full Version : Hacksaw blade tensioners? *now with pics of success!*


rush
03-08-2008, 10:16 PM
Anyone?

I need to figure out how to put downward tension on my chain. Im going ghetto at the moment.

I remember someone doing this. :x:

EDIT: Pics of my first effort:

Fucking MacGyver style. Pair of salad tongs, chopping board, and some hose clamps. Would have worked beautifully, but there wasnt enough tension in the steel of the tongs. CURSES.

http://www.observedtrials.net/otn4/closetensions (Medium).JPG

http://www.observedtrials.net/otn4/tensionzdsf (Medium).JPG

http://www.observedtrials.net/otn4/undersidetesniosan (Medium).JPG

rush
03-08-2008, 10:38 PM
For other people's information.

Lost of homemade tensioners here:

http://www.trials-forum.co.uk/forum/index.php?showtopic=95273&hl=tensioner&st=100

EDIT: Pics of my second, awesome effort:

One really old motorbike toolkit spanner, bent in the right spots with some washers and an allen bolt to hold the jockey wheel on. Thin enough to attach over the axle against the dropout. Works like a fucking amazing champion. :bowbown:

http://www.observedtrials.net/otn4/dsfgdsfgfgvc (Medium).JPG

http://www.observedtrials.net/otn4/flashivd (Medium).JPG

http://www.observedtrials.net/otn4/sfljsxfgxdg (Medium).JPG

http://www.observedtrials.net/otn4/ssdgsgs (Medium).JPG

http://www.observedtrials.net/otn4/xcusdasd (Medium).JPG

epet
03-08-2008, 11:02 PM
http://www.observedtrials.net/album/data/500/thumbs/tension2.jpg

http://www.observedtrials.net/album/data/500/thumbs/tensioner.jpg

I used a hacksaw blade for my tensioner but I think this may be more complicated than you are looking for. I tried a few simpler techniques before I ended up with this one though, some of them worked ok. Hope this helps, good luck!

edit- sorry those pictures look really small when I click on the links I are not good at computermachines, there are better pics are in the gallery somewhere though?

bklmrkt91
03-09-2008, 04:15 AM
that first tensioner that looks like a king seems pretty ez to make. i think im gonna try making it sometime next weekend. ill let you guys know how it goes.

Sinister Cyclist
03-09-2008, 06:44 AM
...I need to figure out how to put downward tension on my chain...

That explains the the hacksaw blade , but what's actually going to push on the chain ? Presumably not a roller or jockey wheel . And attached to dropout , derailleur hanger how ?

Actually , I'll just shut up now and watch this thread with great interest , because there's potential for an inexpensive , very lightweight solution here .

madbiker66
03-09-2008, 07:04 AM
I've tried to use a hacksaw blade as an emergency spring for my 74Kingz tensioner. But i ended up melting the super shitty drill bit i had.

I ended up 'drilling' a hole using an old chain tool and a file :)

LukeRainbird
03-09-2008, 07:57 AM
Read through the link to the TF thread - there's a great deal of different ideas/designs floating about, many of them really good stuff :)

Stikman
03-09-2008, 04:30 PM
I've tried to use a hacksaw blade as an emergency spring for my 74Kingz tensioner. But i ended up melting the super shitty drill bit i had.

I ended up 'drilling' a hole using an old chain tool and a file :)

You need a cobalt drill. Drill at slow speed with a good old helping of pressure ;)

stpatr3k
03-09-2008, 09:05 PM
Will those unbreakable hacksaw blade, not break on a screw up while riding? Can it be cut and filed nicely? I'm thinking of using one too.

rush
03-09-2008, 11:00 PM
I actually found apair of salad tongs, ground them in half, screwed a chunk of chopping board on and attached to my chainstay with hose clamps. Only problem was that the tong handle didnt have enough tension.

Now I have something else on the go.

Will update with pics maybe.

Stikman
03-10-2008, 04:02 AM
:rofl:

Now THAT is backyard mechanic work at it's finest!! ^^^^

rush
03-10-2008, 06:28 AM
I've made one that works. Its ridiculous. Pics tomorrow.

va_tick
03-16-2008, 12:59 AM
whaa happen?

rush
03-16-2008, 07:15 PM
Ill take pics today maybe....

Matt
03-16-2008, 07:19 PM
Ill take pics today maybe....

Oh, did you hear? Andrew is sending out the DVDs today maybe...

Peace
03-16-2008, 11:03 PM
:rofl:

rush
03-17-2008, 07:03 AM
Oh, did you hear? Andrew is sending out the DVDs today maybe...

:momaru:

wickedbob
03-19-2008, 08:27 AM
Hunter’s syndrome is a genetic disorder that mainly affects males. Charles A. Hunter was the first to describe it and etc… hence the name of the disease itself. The year was 1917 when he described it first. He was also originally from Scotland, but later moved to Canada to peruse medical practices.
The disease is triggered by a lack if an enzyme called 12S. This makes the bodies job of breaking down mucopolysaccharides much more difficult. So, of course, they build up which is the problem here. They affect other bodily functions, which we see as the noticeable affects whether it is the physical or mental manifestations.
The Symptoms are very diverse and include many different conditions. Some happen to be colds, ear infections and things of that nature. Other physical characteristics are the bridge of the nose being wide and flat along with and enlarged tongue, head and abdomen. This can cause two totally unrelated children to look somewhat similar, maybe related at a very young age. Some other conditions that come with this amazing disease are limited lung capacity due to think airways, stiff joints and short stature. All of these are horrible affects are brought upon because of the build up of GAG cells in the body. These are just a few of the several problems that is diseases brings however there are many more.
Diagnosis usually occurs between the ages of 2-4. People are usually diagnosed by the physical/mental characteristic of the disease; there are several tests that can be done though. They measure the activity levels of iduronate-2-sulfates and so on. Urine test are a choice, they can be misleading though, meaning they are not going to be 100% correct. The levels may come up as normal while the people are still affected by Hunters syndrome.
The reason it only affects males primarily is because it is an x-linked trait. This means it is passed on through means of the x-chromosome and since men have only one we get it no matter what, well we have it or not. For men there is no middle ground. Women however can just carry the disease because they are xx so its unlikely a recessive trait like this would affect them. They can however carry it and pass it onto their male off spring.
Treatments are less than stellar and could be describes as unreadable at best in many cases. Most treatments only affect certain symptoms of the disease, while not including many others. Elaprase is a new drug that has recently been introduced that seems to work extremely well; very little side effects were examined. Basically it is a synthetic version of the enzyme that people lack lack when they have Hunter’s Syndrome. However the price here is a major factor being it costs roughly 300,000$ a year for a single patient. This means many can’t afford the so called miracle drug and must pursue other methods that just don’t work as well.
Bone marrow transplants have had some success, though. It has proven to be dangerous though and the gains are not always so great. It will cure most physical symptoms, but not any of the mental affects gained by the disease. This means people will be reasonably healthy, but still lack in the mental department.
Here is one last interesting fact, There are about 2000 people affected by this disease and 500 live in the USA.

va_tick
03-19-2008, 08:43 AM
Hey I just learned how this is transmitted in my genetics lab!!!

va_tick
03-22-2008, 05:44 PM
my rendition...... http://www.observedtrials.net/vb/showthread.php?p=483860#post483860

kaar3l
03-23-2008, 03:26 AM
http://members.lycos.co.uk/kaar3l24/DSC08682small.JPG
More pics http://picasaweb.google.com/kaar3l/Tensioner

bklmrkt91
03-23-2008, 11:19 AM
hmmm thats an interesting way of doing it. cool.

va_tick
03-23-2008, 11:36 AM
indeed, i like the star nut!

trialsin usa
03-24-2008, 08:03 AM
At $850 it is an expensive tensioner, but comes with a free frame.

johnglazer
03-24-2008, 08:23 AM
At $850 it is an expensive tensioner, but comes with a free frame.

:rofl:

full_clipp
03-24-2008, 11:51 AM
:rofl:

rush
03-27-2008, 07:15 AM
Edited with pics.

rush
03-27-2008, 06:26 PM
Care you assholes.

Chris
03-27-2008, 06:59 PM
you think it looks weird and you can't think of a way to attach it to the frame, right??? so you think I'm a liar and don't ride my bike like... hophopsnap?!? :rant:

http://www.observedtrials.net/otn4/tensionzdsf (Medium).JPG

Here's proof, look at all the gunk :hs:

http://www.observedtrials.net/otn4/undersidetesniosan (Medium).JPG

:momaru:

rush
03-27-2008, 07:10 PM
:rofl:

Hose clamp would have worked if I cut some indents into it. Worked for about 3 seconds before skip.

netto
03-27-2008, 07:24 PM
:bowrofl:

va_tick
03-27-2008, 09:27 PM
Thats priceless, the spanner is money!